The Exploration of Space |
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Pagina 19
Instead , we will consider how the rocket works and just why it is that it has become of such supreme importance in astronautics . It is often stated that rocket propulsion depends on reactionto put it colloquially , upon “ pushing ” .
Instead , we will consider how the rocket works and just why it is that it has become of such supreme importance in astronautics . It is often stated that rocket propulsion depends on reactionto put it colloquially , upon “ pushing ” .
Pagina 139
We consider that our planet is “ normal ” simply because we are used to it , and judge all other worlds accordingly . Yet it is we who are the freaks , living as we do in the narrow zone around the Sun where it is not too hot for water ...
We consider that our planet is “ normal ” simply because we are used to it , and judge all other worlds accordingly . Yet it is we who are the freaks , living as we do in the narrow zone around the Sun where it is not too hot for water ...
Pagina 177
However , it is important to realise that this time - contraction only becomes really significant at speeds greater than half that of light — i.e . over 300,000,000 m.p.h. To take an actual example , consider the spaceship mentioned on ...
However , it is important to realise that this time - contraction only becomes really significant at speeds greater than half that of light — i.e . over 300,000,000 m.p.h. To take an actual example , consider the spaceship mentioned on ...
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Cuprins
The Shaping of the Dream I | 1 |
The Earth and its Neighbours | 9 |
The Rocket | 17 |
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